Is it possible with Exchange 2010 to allow an Admin to create mailboxes but not assign Full Access Rights?

You may have to create a custom RBAC role for the admin. Some combination of the built-in roles may suffice, otherwise, you'll need to copy one and then exclude the add-mailboxpermission command. http://sysadmin-talk.org/2010/04/5-steps-to-heaven-creating-a-custom-rbac-role-in-exchange-2010/ http://ehlomapi.wordpress.com/ General information http://technet.microsoft.com/en-us/library/dd298183.aspx

Hi, I think that use RBAC is a good solution for your purpose. Just try it and any problem during your operation you can feedback here. Best Regards!